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Technical Articles for Part Number SUM-K8728R1
Summit Racing™ Pro LS Camshaft and Lifter kits SUM-K8728R1
Part Number: SUM-K8728R1
Summit Racing™ Pro LS Camshaft and Lifter kits
Cam and Lifter kit, Pro LS Big Truck Torkinator High Lift. 212/218 Dur., 110+3, .600/.585 Lift, 3-bolt, 4.8 5.3 5.7 6.0 6.2, Each
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Kit/Combo Contents
Summit Racing SUM-150132-4 - Summit Racing™ Lifter Guides
Lifter Guide, Hydraulic Roller Style, Plastic, Chevy, LS, Non AFM/DOD Engines, Set of 4
Kit Item Quantity: 1
Summit Racing SUM-8728R1 - Summit Racing™ Pro LS Vortec Truck Swap Camshafts
Pro LS Big Truck Torkinator High Lift. 212/218 Dur., 110+3, .600/.585 Lift, 3-bolt, 4.8 5.3 5.7 6.0 6.2, Vortec LM7 L33 LS2 L92 L96 LY6 LQ4 LQ9 , Each
Kit Item Quantity: 1
Summit Racing SUM-HT215-16 - Summit Racing™ Performance LS7 Hydraulic Lifters
Lifters, Hydraulic Roller, 0.842 in O.D., Not for AFM-equipped Engines, Chevy, LS7, Delphi, Set of 16
Kit Item Quantity: 1
Overview
Brand:
Manufacturer's Part Number:
SUM-K8728R1
Part Type:
Product Line:
Summit Racing Part Number:
SUM-K8728R1
Cam Style:
Hydraulic roller, OE roller
Basic Operating RPM Range:
2,000-6,300
Camshaft Use:
Racing
Camshaft Manufacturers Description:
The Big Truck Torkinator is a short-duration/high-lift beast. It's designed to make great torque from 2,000 rpm up and pulls to 6500 rpm while remaining easy on the valvetrain with proven .600 lift beehive springs. It has a steady lope and will require tuning.
Intake Duration at 050 inch Lift:
212
Exhaust Duration at 050 inch Lift:
218
Duration at 050 inch Lift:
212 int./218 exh.
Advertised Intake Duration:
261
Advertised Exhaust Duration:
267
Advertised Duration:
261 int./267 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.600 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.585 in.
Valve Lift with Factory Rocker Arm Ratio:
0.600 int./0.585 exh.
Lobe Separation (degrees):
110
Camshaft Gear Attachment:
3-bolt
Computer-Controlled Compatible:
Yes
Lifters Included:
Yes
Lifter Style:
Hydraulic roller
Valve Springs Included:
No
Retainers Included:
No
Locks Included:
No
Valve Stem Seals Included:
No
Timing Chain and Gears Included:
No
Assembly Lubricant Included:
Yes
Pushrods Included:
No
Rocker Arms Included:
No
Gaskets Included:
No
Valve Springs Required:
Yes
Quantity:
Sold as a kit.
Notes:
The Big Torkinator is a short-duration/high-lift beast. It's designed to make great torque from 2,000 rpm up and pulls to 6500 rpm while remaining easy on the valvetrain with proven 0.600 lift beehive springs. It has a steady lope and will require tuning. Camshaft features base circle of 0.728 int./0.737 exh.
Summit Racing™ Pro LS Camshaft and Lifter kits
You won't find a better quality cam for your LS-based engine than our Summit Racing™ Pro LS series of cams. These convenient combo kits enable you to get the cam along with the correct matching lifters. Pro LS cam, lifters, and trays are included in one easy-to-order part number. Whether for street/strip, turbocharged, or racing use, you'll find the kit recommended for your year/make and engine application.
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